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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Women are 50% to 75% more likely than men to experience an adverse drug reaction.
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The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.
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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
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There are approximately 3 million unintended pregnancies in the United States each year.